Wrench



Nov. 30 I926. 1,608,614

H. J. oTls WRENCH Filed June 12, 1925 ZI-nuentoz Hum mq Patented Nov. 39, 1926.

UNITED STATES EDWARD J. OTIS. OF KANSAS CITY. MXSSOUHI.

WRENCH.

Application filed June 12. 1925.

This invention relates to improvements in wrenches of the type usually referred to as monkey wrenches.

it is the object of this invention to produce a wrench which shall be so constructed that it can readily be converted into a hammer and which shall also be adapted to be employed as a tire iron for removing and replacing tire casings on automobile wheels. In addition, this wrench is also provided with claws for pulling nails, bolts or rivets.

My invention can be most clearly de scribed and will be most readily understood when reference is had to the accompanying drawing in which the preferred embodiment thereof is shown and in which:

Fig. 1 is a plan view of my improved wrench showing the same in adjusted position;

Fig. 2 Fig. 1;

Fig. 3 is a section taken on line 3 3. 1. and shows the parts in locked position;

Fig. t is a section similar to Fig. 3, but shows the parts in unlocked position;

Fig. 5 is a transverse section taken on line 5-4), Fig. 1, and

Fig. 6 is a section similar to the section shown in Fig. 3 and shows a slight modification.

My improved wrench comprises a handle portion 1 of metal to one end of which is secured the head or stationary jaw member The handle and head are so connected that they are practically integral. This is ncco'inplishcd by welding or brazing. The head 2 has one end 3 fiat in the manner usual in wrenches oli this type. The other cud 4 is somewhat larger and flatter so as to be suitable for use as a hannner. It is also provided with spaced claws 5 that may ll( employed for puliing nails. removing; bolts or for any similar use and they may also be used in removingtires. The handle has a channel 6 on one side. A portion of the bottom surface of this channel is providwl with a number of transverse teeth T. Slidably secured to the handle is a movable jaw member 8. This jaw i'neinber has :1 rectangular opening through which the handle 1 is inserted. An opening 9 extends through one side of the movable jaw and through this opening the handle portion 10 of the detent member projects. This detent has an arm 11 that extends substantially at right is a section taken on line 2-2 Serial No. 33.618.

angles to the handle 10. Two teeth 12 are provided near the corner formed by the two arms til-and 11. hese teeth are adapted to engage in the spaces between the teeth 7 in th-e manner shown in Figs. 3 and 6. The adjacent surfaces ot the arms 10 and 11 are connected by an inclined sur face 13 whose ends lie in a plane extend ing at an angle to the central portion of said surface and at right ang es to the sun faces of arms 10 and 11 so as to form notches 1i and 15. \Vhen the parts are in locked position (Figs. 3 and 6) the notch l t is engaged by the square corner 16 and the forward end of arm ll. contacts vitli the inner surface of the opening in the head 8. hen the parts are in locked position, it is evident that there can be no movement of the movable jaw member 8 on the handle 1 in one direction. Vihen the parts are to be unlocked, it is necessary to move the movable jaw member 8 on the handle towards the stationary jaw until the corner 16 disengages the notch 14. By a pressure of the "linger on the end of arm 10. the locking member can then he moved into the position shot-c i in Fig lin which position the mova- .w member 8 can be moved in either direction.

It it obvious from an inspection of Figs. 3, 4 and (5 that the jaw 8 must be moved a short distance towards the right (Fig. il before it can be unlocked or before the dcteut can be released (Fig. i). ll the wrench is so adjusted that the ja s it snugly to the s des of a out. the .vrcm-li mint he 12 more I be ow the jaw member ti can be ljuslwl "whiih A no objcclion as no adj. ll iii-cuts are necessary when the jaws have :1 snug tit with the nut. lVheu the wrench is to he :uljustcd so as to lit nuts of various sizes, the adjustments are preferably made before the wrench is applied to the nuls.

In hi; (i i have (-"lwwn a slightly modilicd li' rlri in which the arm ili is i n'criiled with an channe ed slot ll which receives the illil it cl the cw 19. The ohjwt of this construction is to hold the locking member lil place and prevent it. from getting lost when the movable jaw member Fl is removed 'lrom the handle :is it is supposed to be when the tool i employed as a hammer or a tire iron.

it will be noticed that the end 20 of the handle is tapered and slightly curved so that it an be used in removing and applying lilll I ll.)

tire casings to automobile wheels. Since the movable jaw 8 is held in place by means that an be readily released and can therefore be readily removed from the handle, it is evident that the tool may be employed as :i hannner or tire iron by simply removin; the movable jaw member 8. The fact that the handle has a. channel 6 on one side and that the teeth 7 are in the bottom of this channel gives the handle a smooth outer surface in contact with the hand of the operator, which is a marked in'iprovement over constructions in which the teeth are on the outer surface of the handle.

I wish to call particular attention to the locking means employed by me as its great simplicity permits the wrench to be constructed at the minimum expense and with the minimum amount of labor.

Having now described my invention what if claim as new is:

1. A wrench comprising, in combination, a handle having a transversely extending jaw member rigidly secured to one end thereof, said handle having a substantially rectangular cross section and provided with a longitudinally extending channel along one side, a portion of the bottom surface of said channel being provided with teeth, a movable jaw member adapted to be slidably connected to the handle, said movable jaw member having a rectangular opening for the reception of the handle, said movable jaw member having a second opening which extends through one side thereof, and a pawl member operatively associated with said. movable jaw member and loosely monnted therein, said pawl member being of hell crank shape, one end being adapted to lie within the rectangular opening and the other to extend through the opening in the side, said pawl member having a projectin' lag near its apex, said hr; being? adapted to engage the teeth in the bottom of the channel.

A wrench cmnprising, in combination, a handle, a, jaw member permanently and nomnovably secured to one end thereof, said handle ha ing a substantially rectangular cri'i is section and a. pin ality oi transveric notches on one side, a movable jaw member having an opening adapted to receive said handle and another opening in the side, a be l cranlr shaped dctent carried by said movable jaw member and loosely mounted therein said detent having two arms extending substantially at right angles to each other, one of said arms projecting through the opening in the side of the movable jaw member, the other lying within the tint mentioned opening in the movable jaw member, said dctent having an. outwardly extending projection for engaging the transverse notches so as to prevent movement ot the movable jaw member in one direction.

In testimony whereof I allix my signature.

HOlVARD J. O T13.

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